Monmouth University poll shows wide-open 2016 GOP field, with Jeb Bush on top

The big news in presidential politics today is Rand Paul’s official entry into the presidential campaign, making him only the second Republican to formally enter the contest, joining Ted Cruz. Marco Rubio is scheduled to join them next week by announcing his candidacy in Miami. At the same time a new poll published by Monmouth University in New Jersey shows that there is hardly a consensus favorite this early out for the 2016 race. Florida Gov. Jeb Bush leads at 13 percent. He’s followed…